Listed hood assemblies shall be listed with which standard?

• A. UL710
• B. UL1200
• C. UL94
• D. UL555

Answer: (A)

Hood assemblies used in commercial kitchens must be evaluated to a standard that specifically covers their role as a complete ventilation and fire-safety component. UL 710 is the standard that applies to hood assemblies for commercial cooking equipment, and listing to this standard means the unit has been tested as an integrated system for safety, construction quality, and compatibility with fire-suppressing systems. This gives installers and inspectors confidence that the hood will perform properly in a real kitchen environment and will integrate correctly with the suppression system.

The other standards don’t apply to listed hood assemblies. UL 94, for example, governs plastic flammability, which is unrelated to the proper listing of a kitchen hood. UL 1200 and UL 555 cover different product categories and criteria, not the specific requirements for hood assemblies used with commercial cooking equipment.